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Balboa 53421 Circuit Board, SPAC20R1(x), Alt Replacement

  • Part Number: 53421
  • Chip Number: SPAC20R1(x)
  • Manufactured by: Balboa Water Group, Inc.

  • Description
  • Details
  • Reviews

This circuit board is obsolete or unavailable, here are some other choices:
1. Get your circuit board repaired.
    (You must contact us before sending anything in to us.)

2. Click Here - To see all cross reference replacements for this spa circuit board.

3. Give us a call and ask about other replacement options that may not be on our website yet.
This is an alternate replacement circuit board (same manufacturer) and can save you money.
Please read entire page before placing an order.
Cross Reference
See photo (above) for tips on locating the chip and serial number (a.k.a. part number).

You must match one chip number and one serial number.

Chip numbers:
  • SPAC20R1A
  • SPAC20R1B
  • SPAC20R1C
  • SPAC20R1D
  • SPAC20R1E
  • SPAC20R1F
  • SPAC20
  • SPAC20R1
  • SPAC20R1(x)
Serial numbers:
(a.k.a. part number)
  • 53421
  • BAL53421
  • 53421-01
Additional Cross Reference, Compatibility & Installation
ATTENTION: Control panel (topside) must be a Deluxe Digital 8-Button.
If your topside control panel is NOT a Deluxe Digital 8-Button then do NOT place this order.
Do not guess.

Not sure what that means?
No problem, just give us a call so we can assist you better.
Other Replacement Options
For all cross reference replacements of this circuit board:

Click Here

Or contact us if you need help finding or selecting parts.
Control System Serial Numbers
This is not required for cross reference identification.

Used in the following hot tub system control boxes (but not limited to).

Control box serial numbers:;
  • 53006-03
  • 53007-02
  • 53007HC2

  • Part Number: 53421
  • Chip Number: SPAC20R1(x)

  • Manufactured by: Balboa Water Group, Inc.
  • Shipping Weight: 5lbs
  • Item Number: 22-1588

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